Apparatus for wrapping extension-edge boxes.



M. E. PETERS, G. H. FATH GL A. F. MILLER.

APPARATUS FOR WRAPPING EXTENSION EDGE BOXES. APPLICATION FlLED szenzs. 1916.

1,244,539. Patented Oct. 30, 1917.

3 SHEETS-SHEET M. E. PETERS, G. H. FATH 62 A. F. MILLER.

APPARATUS FOR WRAPPING EXTENSION EDGE BOXES. APPLICATION FILED SEFTUZS. I9I6.

1,244,539. Patented Oct. 30.1917.

M. E. PETERS, G. H. FATH & A. F- MILLER. APPARATUS FOR WRAPPING EXTENSION EDGE BOXES. APPLICATION FILED sumzs. 1916.

1,244,539. Patented Oct. 30,1917.

3 SHEETS-SHEET 3.

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inrrnn sra'rns rarnN'r @FFEQE.

iirELviLLE E. PETERS, GEORGE E. FATE, AND ALBERT MILLER, F DENVER, OODOEADO, ASSIGNORS TO THE PETERS PATENT RIGHTS COMPANY, 01? DENVER, COLORADO, A CORPORATION F C ORADO.

APPARATUS FOR WRAPPING EXTENSION-EDGE BOXES.

T 0 all whom it may Concern: I

Be it known that we, MELVILLE E.; PETERs, GEORGE H. FATH, and ALBERT F. MILLER, citizens of the United States of America, residing at the city and county of Denver and State of Colorado, have invented a new and useful Apparatus for rapping Extension-Edge Boxes, of which the following is a specification.

Our invention relates to a new mechanismv for wrapping extension edge boxes;in'box wrapping machines, and the objects of our invention are:

First, to provide mechanism for covering and wrapping. the extension edge portion as well as other parts of paste board boxes with blanks or labels made of calendered or other finished surfaced paper or with other suitable box coveringor wrapping materials.

Second, to provide a simple, quick and positively combined box bottom extension edge and box end wrapping mechanism,

Third, to provide a box bottom extension edge and upper box surface blank wrapping and gluing mechanism, in which two separate wipers are arranged to move simultaneously together-towrap the blank against the surfaces of the extension edge and upper portions of the box and to then wrap the blank ends against the upper surfaces of the box independent of and while the ends of the blank arebeing held down against the extension edge of the box by one. wiper, and in which the upper wipers back 05 and return to and connect with the extension edgewiper and they move away from the box together and simultaneously.

W e attain these objects by the mechanism illustrated in theaccompanying drawings, in which:

Figure l is a tional view through a portion of a box wrapping machine embodying mechanism constituting the present invention.

Fig.2 is an end view of a portion of the machine showing the operating lever for the upper box form or plunger.

Fig. 3 is a side elevation of one of the end wipers in a' vertical position showing the extension presser blade in position to press the blank over the extensionends of the bottom of the box.

Fig. e is an end elevation of Fig.v 3.

Specification Of Letters Patent.

vertical longitudinal sec porting standards and mechanism'carried' thereby for folding the end portions of the side members of a wrapper around and over the ends and cornersof a box.

Fig. Sis a central, vertical, sectionalview through the mechanism shown in Fig. 7.

Fig. 9 is a side elevation of a portion of the mechanism shownin Fig. 8.

Fig. 10 is an end View of the cross head which carries the side wipers and also the mechanism which elfectsthe side extension foldingand pressing operation, the latter mechanism being removed.

Fig. 11 is a side elevation ofthe cross headshown in Fig. '10, one of the supporting cylinders for the side extension mechanism being shown in section. I

Fig. 12 is a front'elevation of the mechanism for performing the side extension folding operation.

Fig. 13 is a fragmental plan View showing the cam and levers operated thereby for operatingeither the Ordinary tight wrap mechanism or that for performing'the extension bottom work.

Fig. 14 is a horizontal sectional view on the line lsl14 of Fig.4.

Fig. 15 is a frontview showing the stop for limiting the inward movement of the Similar letters of reference refer to simi .lar parts throughout theseveral views.

Referring to the drawings: The numeral 1 designates a supporting frame which comprises abase plate 2, side frames 3 and a table portion 4. A suitable driving shaft 5 is journaled longitudinally of the frame in suitable bearings 6, that are secured to the base plate of the machine centrally between the side frames 3.v

This shaft is adapted to be rotated by any suitable rotative power transmitting mechanism, which we do not illustrate.v

Upon this shaft we secure disks 7, 8, 9,

and 10, the sides of which are provided with v Patented O'ct.30, 191

. Applicationfilecl September 25, 1916.- Serial No. 122,060.

cam grooves or runways in which rollers,

project that. are mounted on leversor rock described.

Through the center of the table portion of the ma-chine an aperture 1s forlne d ln whicha vertical plunger barll is reciprocally mounted in adjustableslideway' bearings 12, that are attached to the upper side, 0f theta'b'le 1 portion 4 of frame: The lower end{ of this bar is'lconnected to thejupper end'of a cam fork 13, having a rolletlt which engageslthe runway of the cain disk 9 that is secured on the; main driving shaft" 5 of the 1nachine.- The upper end of'the plunger bar llis provided with-a flange that is'se'cure'd to a block of wood or other suitable material- 16 that is made offthesize and width of the bottoin so'f the particular sizes of boxthat are to'be pressed against it.

The top'surface of this blockfis 'c'o'verediwith a metal plate l7'having a cushion of felt 18,

or other suitableEmat'erialQ against which'the" bottoms ofthe' bo'xes rest. Our" box supporting plungers and our box wrapping-side and corner mechanism will -partially *oover ,or;

wrap' bo'xes of froin'labout 3 inches long by one inch wide by onehalf, inch deep upi to boxes" of about 14 inches" long by 8 inches widelby 3 inches deep, but eachfdifferent size ofbo x must have upper andflowerpluiif ger blocks that will fitin heme of the lower plunger, its outside-bottom length and width dimensions, and an upp er plunger that Wlll fit snugly lnside of each s zed box the-machine will wrap Each gunimed blank that'fis fed ,to the; wrapping n achine"'r -:sts centrally onitop' of the loweriblock, and each a boxis fed by the upper plunger'to rest' centrally on the blank and to rest alsoce ntrally on top'bf the block, 'which' for rns a movable. support for the blanks,- and the boxes.

Above {this lower" plunger block and in 7 vertical axial' alineme'nt "with it,"a n upper plunger bar 19 is reciprocal-1y i'nornted in suitable slideway bearings .l 20;} that E are formed in an ov'erhan'gingbracket I wh1cl1 1s secured to the box'frameof' the machine. The lower end of this plunger bar 19 is provided witha block' eas ments term a box fornig andit ls made enough smaller-than ulster and the' block'i of the plunger" to f t snugly inside of the lowe and presse'sthe bottom of the box down tight against the blank and againstthe-top of the 5 lower plunger block. 1 The lo'werfplunger with its block reciprocates yertica-lly a short distance and the position in which the lower wees ,plungerblock first receives the blank and the boxshell is .the highestpoint of itsflfer- V tical reciprocal movement. a Consequently when the upper plunger forml descends into the bottorn of the box to the gunnned surface of the blank upon which the box rests.

The lower plunger is then: drawn down by-its cam andis forceddownbetween the sidewipers dill-and as these twotplungers move down togetherth'e upper plunger which is arranged to inovel slightly faster than the-lowerplungerybears and conseq11ent-ly;crowcls down against it and thus holds thebottonrof thebox with a constantpressure against the top ofthe" lowerpliu1ge1 *-,'-and as the lower plunger moves sloweronits'down stroke-than the upper plunger,'in order to yieldlto theslower down movement of the lower plungerfthe upper plunger is provided with acoiled spring 24, whichis inou'ntedon a bolt 25; This bolt is provided withan eye 26, that'is screwed upon theupp er end of the'boltgfThis eye26' is loosely mounted on a stud bolt'27, which is threaded into --the side of the reciprocalplunger bar 19. The opposite end of the" spring provided bolt is provided with" a pin 28, against which a washer29bears,and thef spring-Edie mounted on th e 'bolt'and bears resiliently atone end-against .the washer two nuts 31, which are screwed down against the eye bolt and enough farther to causethe eye bolt to compress thespilng'until the eye boltand the reciprocating plunger bar are a under the desiredtension. 1 lhe ;eye bolt provided with a threaded stud port-iui that extends loosely through; and is secured by a nut to ailug thatfornis-theterininal end of a leveia-BQ, the opposite encl' of-\vh-ich '.is piv--- otally secured to a yoke 33,",that is formed on an arm 'portion 34: of a. yoke shape-d frame 35,1;which rests onandwis bolted-to thegtop table portion of the box-shaped supporting frame ofthe znachine.-ii V The "lever 32' i's recipr'ocatedvertically by a rod 36, on'e end ofwhich is provided with r a yoke lug37;"' which straddlesfilthe lever and a piwotal' bolt 38 is extended through both the lug??? and the lever. "'The lever" has an elongated'slot ;39,fand {the bolt3i81car ries a roller 40, which engages the? edges of the slot,; as the leveris raised and lowered; the said slot permitting the vertical move rnent of the rod 36, as will lo e-understood;

The opposite end of thisuod 36 is connected to a lever 41 which is arranged to beengaged by the cam 42, that is formed on the disk 7 which is secured on the main driving shaft.

Each blank fed to the wrapping machine is wrapped against and glued to the opposite sides of each box, side by side, and the oppositely arranged side wipers 43 that turn the upper ends of the sides of the gummed blanks up against the boxes are mounted on two stationary cross head brackets as, that are secured to the top of the table portion of the frame, and they are arranged on opposite sides of the box supporting plungers 16 and 22. These side wipers preferably consist of pieces of wood, the blank engaging faces of which are covered with strips of felt 45 or other suitable material which is glued or is otherwise secured to each wiper. These wipers are ,removably secured to projections 46, that are formed on the cross heads 47, that are slidably mounted in slideways 48 that are formed in the brackets at. There are two of these brackets, one on eachside of the upper and lower plungers, and these two plungers reciprocally carry each box and blank between these side wipers. These side brackets are positioned parallel with the longitudinal length of the box wrapping machine, and are secured to the top of the table portion of the frame. These brackets we term the side cross head brackets. These brackets have a central standard portion 49, and two laterally extending wing portions 50. They each supportv one side and two end wrapping mechanisms. The underside of each cross head 47, is provided with a gear toothed rack portion 51, which is engaged by a toothed segment portion 52, that is formed on one end of a rock arm 53. These rock arms are pivot-ally secured to the brackets a l, and their opposite ends are provided with pivotal eye bolts 54:, through which vertically positioned rods. 55 pass loosely. A collar 56 is secured on each rod by a set screw and an expansive spring 57 is mounted on the rod between the collar and the eye bolt 54. The upperend of each rod is threaded and a collar 58 is pinned to it, which engages the eye bolt 54: on the downward movement of the rods 55.

The rods 55 extend down through bosses 59, on the brackets 44, andthrough the table and rest on theends of a bar 60, the central portion of which is secured to a vertical plunger 61, that is reciprocally mounted in a slideway formed in a transverse bracket 62, that is bolted to the sides of the frame. The lower end of the plunger bar 61 is connected by a link 63, to one end of a lever 64, the opposite end of which is rigidly secured to a shaft 65, which is mounted in a bearing standard 66, which is bolted to the bed plate. On the shaft Between the arms 67 lever 73,'is mounted on the hub portion of the arms 71 and 72, and its forward end is pivotally attached to a locking pin 74, which is slidably mounted in the inner ends of the short arms 71 and 72. The locking pin of such a length that when the lever 73 is shifted in the direction of--the arrow, the said pin projects through the hole in the arm 72,and into the hole in the arm 68, thus locking the arms 68, 71 and 72 together, while the arm 67 is disconnected from the arms 71 and 72. The arm 67 and its actuating cam face 69, operate in connection with boxes of the ordinary type, while the arm 68 and its actuating cam face 70, operate in connection with boxes having extension bottoms, the respective cam grooves being arranged to that end. Thus when boxes of the usual type are being covered, the arm 68. is not needed, and when extension bot-- tom edge boxes are being covered, the arm 67 is out of commission. Therefore, when boxes of the usual type are being covered, the short arm 71, which with the arm 72 is rigidly secured to the shaft 65 by a pin or other suitable means, is locked to the arm 67 and when the arm 67 is operated by its cam 69, a corresponding movement is imparted to the short arm 71, which is locked to the arm 67 by the pin 74, and as the arm 71 is rigidly connected to the shaft 65, the said shaft is turned thereby, and the arm 64, which is also rigidly attached to the shaft 65, is rocked, and movement is thus transmitted to the plunger arm 61, through the medium of the link 63. The arm 68 will be rocked by its cam 70, but it will perform no function, as it is not locked to the shaft 65. Collars 75 are secured upon the lower portions of the rods 55, and between these collars and the lower ends of the bosses 59 are interposed coiledsprings 76, which act to depress the rods 55, after they have been raised and then released by the cross bar 60.

The vertical movement of the rods 55 causes their collars to compress the springs 76 and raise the rock arm 53, which causes the toothed ends of the rock arms which engage the rack bar 51 of the cross head 17 to move the wiper blocks against the sides of the blank and box, and hold it there with a resilient tension, as the rods 55 are free to move through the eye bolts 54, after ward pressure.

the side wiper is against the box... Conse quently the side wipers bear against the box with a resiliently yielding pressure.

The side wipers as above described are used for wrapping box shells. in a manner known as tight-wrap worln. and we have described it in detail, to bechanged irom the tight wrap kind of wrapping to the extension edge kind of wrappingand vice-versa. Cur present invention, however, applies essentially to wrapping, boxes having extension bottom edges and in order to accomplish the wrapping of theextension edges of the opposite sides of the boxes the following additional mechanism is added to the side wipers. The

sliding block of each wiper mechanism is provided with a'pair of horizontally posh tioned cylinders 77, that depend from' it. These cylinders are provided with vsolid head portions at oneend and have nuts 78 threaded into them at their opposite ends. Axial apertures are formed through the heads and nuts in which stems 79 are reciprocally mounted and expansive coiled springs 80 surround the stems. The stems are provided with shoulders in the cylinder against which washers 81 rest that receive the thrust of one end of the springs 80, when. the stems are moved back through the cylinder by mechanism that is attached to theirfront ends, and the springs more the stems out forwardly by their expansive ten,- sion whenthe stems are released from back- A nut is threaded to the outer end of each stem, by which the tension of the spring can be regulated as'desired. The outer ends of each pair of stems are threaded into a clip 82 (see T, 8, and 11), that is provided with a transverse pin. 83, upon which is mounted a horizontal rock plate 84-, having a depending bifurcated arm 85, in which is mounted: aroller 86. This roller is designed to engaged by one end of a rock arm 8?. which is pivotally secured intermediate of its ends to a support 88, which is bolted to the inner face of the bracketed. Theopposite end of the rock arm is connected to a spring 89, which is attached at its opposite end to a pin 90, projecting from the bracket 14-. Plate 8-1 has a forwardly projecting blade 91 secured upon its upper face. The pin 83 has. a surrounding coil spring 92, vone end of Which engages the clip 82, while its outer end enters a collar on the end of the pin 8-3. This spring normally holds the blade and its supporting plate 91, tilted upwardly, in which position it is moved against the box and over its extension. lip. 11s the cylinders 77 move inward with the blocks 47, the roller 86 engages the arm 87 and the plate S t is tilted, and the-blade 91 engages the blah: and presses it down against the extension portion of the as our machine has,

box, the, spring 89 affording a compensating movement fort-he blade against the boX,.the,

blades yielding backwardly from ,it when the cylinders and the blockeontinue. slightly farther toward the box .tocomplete their 1 This arrangement allows the blade to engage the box witha resilient .pressure.

stroke.

The roller ,86 engages the rock arm 87 fas the cylinder moves forward and tilts the plate and its blade downwardly against the tension of the sprnig 89, so that the blade exerts a downwardpressure ontheeXtension wrapping the blanlraroundthe lOOX in tight.

wrap work is performed, by, the corner. wipers. These corner wipers are. used to wrap the end portions of thesides ofjthe blank around the corners of the. box, as

shownin Fig.7, just before the end wipersmovelnto action to wrap the endsof the label against the ends of the box. There are two of these corner wipers for each end of the box, one at each corner, and they each consist of a plate which is provided with lugs 94:. which are pivotally secured to a block 95 by a pin 90. This pin extended beyond the lugs and a coiled spring 97 is mounted on it, one end of whiclris secured to a collar on the lower, end ofv the pin and theother end of the spring is secured to the adjacentlug 9i. Each block 95. is tiltingly secured to the end of a toothed rack'fbar. 98 by apin 9S, and this block is also tiltingly secured by a pin 99 to asimilar raCkba 100. The two bars 98 and i100 aremoimted. parallel to each other iaa slideway bracket 101 that is adjustably secured in slots 102 that are formed in each end portion 50 of the bracket i l by bolts 103, there beingtwo sets of these. corner wipers for each side corner of the box. Each toothed. rackbar 98 isengaged by a 10a that is provided with side 'trunnions that are mounted in.

bearings that are formed in, the sides oftheslideway bracket 101. Each bracket stat is provided with bearings 105 at, its ends, in which are mounted square shafts106, having round bushings which turn in the said bearings 105. and upon therespective' shafts 106 are slidablymountedthe gear wheels 10%, twongearwheels being on ecah shaft. The gear ,wheelsoccupy the position shown in Fig. 7, or in other words, mesh with the toothed bars 98 when tight wrap boxesare iassedtln'ough the machine, and for loose wrap bores thegcars 10% are shifted to engage the toothed bars 100. The gearshave short trunnions, one of which enters the opening in the adjacent side of the slideway bracket 101 when the gear is in mesh with of the the toothed bar 98, while the other trunnion enters the opening in the other side of the bracket 101 when the gear is in mesh with the toothed bar 100. The slideway is formed with, a central partition web 107, which separates the toothed bars 98 and 100, the said web having a semi-circular recess to permit of the lateral shifting of the gear wheels 104'. Upon the outer end of the partition web of each slideway is secured a blade spring 108, having a curved portion which, when the gear wheel 104 is in mesh with either of the toothed bars 98'or 100 is adapted to bear upon the adjacent trunnion of the said gear wheel, and thus prevent lateral shifting of the same, as will be understood byreference to Fig. 7. Each of the square shafts 106 is rotated by a gear 109 "that is mounted on its forward end and which is driven by a vertically disposed toothed rack portion that is formed on a bar 110 that is slidably mounted at'its upper end in slideways 111 that are formed in the adjacent ends of the cross head bracket Thelower end of this rack bar is adjustably secured to a" vertically reciprocating cross head bracket 112. The slots'113 in thelower end of the rack bar when it connects with the ends of the reciprocal: cross head bracket permit of vertical adjust-mentor the rack bar.

The reciprocating bar 98 is moved by the vertical tip-stroke of thecross head 112 and the vertical rackbar' 110 and by its pinion 109 and the pinion 104, and the wiper 93 is thereby pressed against the corner of the blank and the corner of the box, which throw movement is 'suliicient to tiltingly compress the wiper against its abutment spring as the wiper moves against and over the corner of the box against its adjacent corner and edges with sufficient resilient pressure to firmly glue the corners of the label to the corners of the box. After the corner wiper has pressed the corner of the blank against the corner of the box, it is thrownback away from the box, by the triotional engagement of the sliding bar 100, with its slideway, which acts to accomplish this throw movement of the wiper in the following manner: The springs 97 normally hold the wipers93 out ofcontact-with the cornersof the box, but the block 95 is slightly tilted on both its inward and outward movement by. the frictionalengagement of theitooth bar not operated by the gear 104 with its slideway. In the present instance thebar 98 is engaged by the gear 104, and the bar is moved outward or away from the box. The pull on the bar by the gear wheel will causethe block to tilt outward or away from the corner-of the box, owing to the consequent dragging movement of the bar 100, upon which an indirect pull is excited Thus when the block 95 and ts The pinion away from the box after it has completed its corner label wrapping stroke. The reciprocating cross head 112 reciprocates the rack bar 110 that rotates the pinion and shaft that through the medium of the gear 104 reciprocates the bar 98 which moves the vwipers to and from and across the surface of the corner ends of the box, at all tour'of its corners, and leaves the ends of theblank glued to the ends of the box. I i

The next step treatment and'the-finalone of wrapping the blank around the bottom extension edges of the box and its fiat ends is given by the end wipers which act simultaneously against the opposite ends of the blank and wrap them up against andglue thein to the opposite ends of the box. Each of these end wipers comprises a tilting wiper supporting block 113, which is provided with a side lug 114 that is pivotally mounted on u pin 115, that extends through the-ends of a yoke-shaped bracketl'ld' Thisyokeshaped bracket stands in substantially a ver tical position on the machine and it is provided with a flanged end portion 117 that is bolted to a slideway block 118 that is adjustably secured to a slotted'bar'119 that is slidably mounted in; the table 4 of the frame ofthe machine; The lower end of the block 113 swings on its pivotal pin between the arms of the yoke shaped bracket, and during its operative movementit swings from a normal horizontal plane into a vertical plane. This wiper block supporting head comprises two parts or pieces, which act independent of each other during the different stages of wrapping the end flaps against the opposite ends of the box. One of these parts is the block 113, which pivotally swings in the yoke-shaped bracket 116. The other part is the wiper head 120 1 and its supporting bar 121. This supporting bar 121 of the wiper head is reciprocally mounted in a slideway 122 formed in the block 113. j

The wiper head projects beyond and over the slideway 122 of the block 113;"and its underside is'provided with a curved projection or fillet 123 thatv extends from the underside of the head to the adj acent side of the bar.

, This curved portion 123 of the headis engaged by a roller 124, that is rotatively mounted in the forked end of a vertically disposed rack bar 12 5, is slidab y mounted 'inthe bearing block 118, that is secured to the'bar 119, the block 118 being provided With a partially inclosed and partially 'open slidetvay 126 in which the rack bar issupported. T his rack bar is provided with a verticalrow of geartecth in line with the openespace of the-slidewav 126.

This toothed rack portion of the rack bar 125 meshes with apinion 12Tthat is mounted loosely-on a square shaft 128. The pinion lSIPIOVIldQCl' with a hub portion 129 that is adapted to be -'rotativcly 1 j ournaled in a bear- 1'3OEinztheblock 118. theresbeing, 1011601 *theseblobkslilS-on each side of the center of themachine onwhich the-two extension end-wrapping mechanisms are secured. The hubrofthe pinion extendsithrough the bearingizand an enlargedflange-portion 131 is formed on it, which securesthepinion from :IHtEIEIl HIOVQmQRt in its: bearing. 7 The square ishaitextends acrossfthe :center ofthe table and on;opposite-sides of it. far enough to allow these pinions and their bearings to be nioved toward orawav irein the cent oz themachinetoavrap the opposite ends of the differentsizedblanks on their respective dii ferent sized boxes. 1 -'One-.end of; this square shaft extends to 'andthrough' a bracket 1'32, thatis secured :to-the-wadjacent side of the frame of the machine, and-isiournaled in a hub133that isvforinedion the bracket, and-on its outer end a pini'on gear13 1 is secured thatv meshes with a vertically reciprocating rack bar 135, which is slidably mounted in bearings/136 thatareifornied on a bracket 132. which is secured to the endof the table. Thelowcr :endiof this rack bar 185 is connected to one endof a reach bar 137, the opposite end of which is connected to the upperend of a forked lever 1-38, the opposite forked end of which straddles the :main shaft. This lever is providedWit-h a roller 139 that engages a cam 140 0114131191 disk 1O which i1n parts, a reciprocal movement to said rack :bar; and rotates the pinion which turns the square shaft and the pinions 127 that raise the: rack bars 125.

:The end .WYiPGlS' are adapted to effect e tension lipiv rap Work bvineans of a spring 1 11: WlllCliihOllSGCl in a cup 14-2. Whichis boltedto; a bracket 132. A' rod 1&3 extends through :this cup and ,its lower. end is threaded and provided With nuts which strike thebottomof the cup and define the stroke oi t-he rod. Theuppe-r end of this .rod engages the under edge of an arm 14% that-is secured to the side of the-racl-z bar 135. The spring 141is an expansive tension spring and its lower end rests against the bottom of-the cnp; 1 .2; While its upper end bears against a cap 145' :that is slidablv mounted in @the cup andis secured to the rod 1:43.

T he arrangement of the rack bar 135 to thereach bar 137, as shown in is for Wrapping ordinarvboxes or such are notprovided with extension bottonis, The rack bar 135 is provided at its iowerportion With a slot 1&6 and. a block is? is bolted to the upper end of the'bar 137, and is provided with a recess in which rest-sthe lower end of the rack bar 185, and the bar is held Within the recessby a cap 118. A pin 1 19 passes through the lower end 01'' the. rack bar 135 andbears against the lower. end of theblock 14:7, and an adjustable block 150 bears againstthe upperend oftheblock 1&7, and issecured to the rack bar '135' by'a bolt 151 Which-passes through they slot14e6. Thus arranged the cainfork 138, the reach bar 137;;and' the rack bar 135 move in unison, as will "be understood, and with these parts thus arranged as shovznby Fig. 1, the end wipers are raised high enough to. accomplish the end 'Wiping of boxes of the greatestdepthfor which the machine is set. In wrappingboxes of less depth, however, the rack bar inusthave' a shorter stroke in 'orde to diminish the rotative travel of the gear WllQQlS 127,v and to respect Fig. 1,

accomplish this, the adjustable blockv 150. is

moved up a suitable distance above the block 1-17" andis-firinly clamped to the rack bar. by its bolt 151. Thus the movement oft-he cam 1 10 will raise the reachbarlSIa short dis tance before theblock 15!? engages the.- block 1 0, after which the rack bar and reach her move up in unison. alt is, necessary however thatnthe rack bar should start to move upviard simultaneously with the reach bar, and

this is accomplishe'dby thespring1i-1, which lifts the rod 113, the upper end of which enga and exerts an upivard pressure against the projection 14%,,011 the rack bar 135, by which the pini'14c9' in' the lower end of the rack bar. is-held in engagement with the block 1 17 ofthe reach bar and the rack bar,

through the action of the spring lel nioves up with the reach bar, until the nuts 152 on the end t, the rod 113.. engage the bottom otthe housing 1 1:2. and the further.ac tion of the spring is thereby checked Assuming that the reciprocal stroke: of the bar 135has been properly adjustedto fit'the height of the ends of the box between the extension edge and the end Wipers,..then it, rotatescthe :pinion 13d and the cross bar and s pinions- 127 which reciprocate 1119111601711 of. the opposite box end miners, and they cause each. of these extension edgeand vrend wrappers to act astob lOWSI.

'The lower plunger. block or 10111118 or. a size to extendto the outer edges of the side and end ex ensinn. botto edgesot the box. 1

n iltli block 11.3 is-provided with a blank 9 blade 153 that secur d to it and Attends across its top ant g ll x be- LS opposite sides and is of he run width of the extension "edge ofbthe endof the box, and the wiper head is provided with a stepped portion on which a. wiper block 154 is clamped by a clamping plate 155 that issecured to the top of the h ad120 by a clamping bolt 1o6. Thiswi'per block has its upper edge rounded baclrwardfroni its outnded edge is side face, which with its 1' covered witha pad of felt or other suitable soft cushioninggmaterial.

This end wiper is of the full width of the box above itsextension edge. 7

The bar 121 of the wiper supporting head is secured in its initial wiper starting posi tion relative to the extension edge of the presser blade by a spring 157 that is secured to the back of the block 118 at one end, and extends beyond its lower end and fits with a resilient bearing pressure into 'a' recesslSS that is formed in the bar 121. Consequently whenthe'wiper head is down in the slideway of the block" {iIICl I 'GStlHg on top of the block, it and its bar are secured by this spring with a spring tension to theblock, and

when in this position thewipers are ready to engage the opposite ends of th'e'box the instant'the' extension edge blank turning and presser blades'fact operatwely on "the" end flaps of the blanks," and "the extension end s of the box, as will be presently deedge scribed. I a r V The lower end portion of the wiper head bar opposite the spring receiving groove is formed with a projecting lug 159, and the toothed rack bar, is provided with a; recess 160 in its side that is arranged in the p'atlr of and to receive the lug," at a predetermined P01116111 its upward Inovement, wlnch-point is. reached in the upward movement-{of the racklbar the instant the extension edge presser bladeshaitecompleted tlieir'blank turning and wrappermovement overthe edge and top side of the extension f'edge of thebox, At the instantthe blades have been tilted down hard against'the upper surface of the extension. edge and'the end wipers have been moved straight against the end surfaces of thebox, the canrlS operatesmechanism to be presently described, "which causes" the blocks 15-1 to' noi'e slightly inwardly directly against/the: 'ertical end'su-rfa'ces {of the box. Thisinwardmovement of-the end wipers against theends ofthe box is accomplished in the following manner Each of the sidebars 119 has depending bifurcated lug 161, at its outer end, to which one end of a link 162 is pivotally secured, and the other ends of these links are connected to 'levers163 and 164, which are rig' idly secured upon shafts 165 and 166 respectively, whichare mounted in the sides of the table. The lever'163 is a bell crank form of levenhndits other member-is con nected to the upper end ofa rod167,the-

end of the rod and bears against the collar 16S, and the upper end of this sprlng bears against an eye bolt 17 0, which is secured in the end of one arm 171, of adouble armed lever, the other 211111172 of which carries a roller 173', which is adapted to be engaged by a cam on the peripheral edge of the cam disk 8. The doublearmed lever is mounted on a stationary shaft 171, which projects" from a Macho-b175, that forms an integral part of the cap of the ad acent bearing standard 6. The shaft extends beyond the hub of the double armed lever and upon its outer end a collar 176 is rigidly secured. A coil spring 177 is mounted on the shaft between the collar and the hub of the double armed lever, one end of said spring entering a hole in the collar while its opposite end enters a hole in the hub of thelever, the spring being under a tension that will hold the roller 173 in contact with the periphery of the disk 8. The outer ends of the shafts 165' and 166 carry respectively levers 17S and 179, the lever 178 extending, upward, while the lever 179 extends downward, and the ends-of these levers are connected by arod 180.

Thus when the cam on the disk 8 passes:

from underthe roller 173, the spring 177,. forces the double armed lever downward,

and the rcd-167 is drawn upon, and the shaft;

is given apartial rotation by the bell crank 163, the other-member of which draws on the link 162'andn1oves the slotted bars" 119 inward. Simultaneously the lever 178 on the outer end of the shaft 165 pushes on the rod 180, and the lever at its. other end partially rotates the shaft 166, in an opposite'direction to the shaft 165, and thelever 16 1- on the shaft 166, draws onits link 162.;

" lower end of which has aecollar 168 secured j thereon a coil spring 169 surrounds this by which the other slotted plate 119 is moved inward. .s the bars 119v carry the wiper supp rting blocks. 118, it will be IQQClllYSQG-D that the said wipers will beinored toward each other against the ends of the box, and

with a resilient-contact effected by the spring.

169:" The eye bolt 170 on the reverse move-i ment of the le arm engages a collar 181, i

which is" pinned to the rod 167, and thus the rod is lifted, and, the outward 1110,1 13

The operation of our combined box bottom extension edge and end wiper blank.

opposite ends of extension edge boxes, we do not wish to be limited to the construction and arrangement shown, as many changes might be made without departing from the spirit of our invention.

Having described our invention, what we claim as new and desire to secure by Letters Patent, is:

1. An apparatus for wrapping extension edge boxes, said apparatus being embodied in a machine provided with an upper and a lower plunger arranged to receive, grip and move a blank and box between them, blank and box side and extension edge presser blades and independently arranged side wipers surrounding said plungers, said side extension edge presser blades being arranged to wrap the side flaps of the blanks first to the opposite side extension edges of the box and then to complete the wrapping of the side flaps of the box to its sides, and suitable corner wipers cooperating with said side wipers for wrapping the terminal ends of the side flaps of said blanks around and to the opposite ends of said box, and extension end wipers comprising means including the pivotal swinging block and the reciprocal wiper head whereby the extension edges of the, ends of the box are wrapped over the terminal ends of said side 2. An apparatus for wra ping extension edge boxes, said apparatus being embodied in a machine provided with an upper and a lower plunger arranged to receive, grip and move a blank and box between them, blank and box side and extension edge presser blades and independently arranged side wipers surrounding said plungers, said side extension edge presser blades being arranged to wrap the side flaps of the blanks first to the opposite side extension edges of the box and then to complete the wrapping of the side flaps of the box to its sides, suitable corner wipers cooperating with said side wipers for wrapping the terminal ends of the side flaps of said blanks around and to theopposite ends of said box, and means including a a combined extension edge and end wrapping mechanism comprising means including the swinging pivotal block, the reciprocating wiper head and the operating rack bar mechanism arranged to first wrap the end flaps of the blank to the opposite ends of said box simultaneously and then to wrap the ends of the blank to the ends of the box above its extension edges.

3. In an extension edge box wrapping mechanism, the combination of the table frame and the blank and box supporting plungers, with the side wipers comprising the brackets mounted on said table, the wiper block reciprocally mounted in said bracket, means including cam actuated gearing provided with a resiliently yielding blank wiping stroke for reciprocating said wiper to and from said plungers, and means including a resiliently controlled tilting.

blade at the lower edge of said side wipers for exerting a combined longitudinal and vertical blank wiping pressure of the lower edges of said side wipers, said blade being reciprocally actuated by said side wipers reciprocating mechanism, and means whereby said extension edge wipers move first to wrap the blank around said side extension edges, and then said side wipers are moved directly against the opposite sides of said blank and box.

a. In an extension edge box wrapping mechanism, the combination with the table frame of the blank and box supporting plungers, with side wipers comprising the wiper block supporting brackets provided with a slideway, a rack bar plate slidably mounted in said slideway, a blank wiping block secured in said plate in operative wiper relation to said blank and box and plungers, a toothed segment ended rock arm meshing with said rack bar, a reciprocating rod secured to the free end of said rack bar by a resiliently yielding pivotal connection, means including a cam for reciprocating said rod, means including the corner wipers and the extension edge presser blade for wrapping the blank around the sides and extension edges of the boxes, and means includingthe combined extension edge and end blank wrapping blades and their wipers arranged to be swingingly moved together against the opposite ends of said boxes, and means for moving the end wipers upwardly to wrap the ends of the box after the extension edges have been wrapped and while they are being held in a wrapped position.

In testimony whereof we affix our signatures in presence of two witnesses.

MELVILLE E. PETERS. GEORGE H. FATI-I. ALBERT F. MILLER.

Witnesses:

Gr. SARGENT ELLIOTT, ADELLA M. FowLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

